.menu-item {
    font-size: 20px;
    border: 2px solid #66CDAA;
    display: inline-block;
    position: relative;
    cursor: pointer;
}

.menu-item .submenu {
    width: 100px;
    background: rgb(134, 173, 134);
    position: absolute;
    cursor: pointer;
    display: none;
}

.menu-item .submenu.show {
    display: block;
}